| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 502339000 | Of palladium or platinum | 31 |
| 20130029842 | CORE-SHELL TYPE METAL NANOPARTICLES AND METHOD FOR PRODUCING THE SAME - The present invention provides core-shell type metal nanoparticles having a high surface coverage of the core portion with the shell portion, and a method for producing the same. Disclosed is core-shell type metal nanoparticles comprising a core portion comprising a core metal material and a shell portion covering the core portion, wherein the core portion substantially has no {100 } plane of the core metal material on the surface thereof. | 01-31-2013 |
| 20120245024 | METHOD FOR MANUFACTURING A CATALYST SUPPORT - A method for manufacturing a catalyst support, includes, in the following order, the steps of: (a) shaping a non-sintered porous ceramic base support; (b) depositing, on at least part of the surface of the non-sintered porous ceramic base support, a suspension of ceramic powder in a solvent or a mixture of solvents so as to form an interface layer able to increase the surface area of the base support; (c) sintering the base support, at least partially coated with the suspension. This method allows to economically and rapidly manufacture catalyst supports, and especially burners for fragrance diffuser. | 09-27-2012 |
| 20090270252 | ACID RESISTANT CERAMIC MATERIALS, FILTER USING THE SAME, AND PREPARATION OF THEM - The present invention provides porous ceramic materials having good resistance to heat, acid and base, comprising three or more oxides selected from an oxide of silicon (SiO), an oxide of aluminum (AlO), an oxide of a transition metal, MxOy, [wherein M represents a 4B, 5B or 6B-group transition metal which can be selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W or Ce, x represents an integer of 1 to 3, and y represents an integer of 1 to 3] and its preparation. By applying ceramic materials prepared according to the present invention that are structurally, thermally and chemically stable to a porous honeycomb support for the purification of exhaust gas or to a filter (DPF, Diesel Particulate Filter) for the purification of diesel engine exhaust gas, it is possible to prevent or remarkably reduce any structural destruction caused by corrosive gas, which results from employing a cordierite material as a structural support. | 10-29-2009 |
| 20110207602 | NANOMETER POWDER CATALYST AND ITS PREPARATION METHOD | 08-25-2011 |
| 20090325796 | SUPPORTED CATALYST, ELECTRODE USING THE SUPPORTED CATALYST AND FUEL CELL INCLUDING THE ELECTRODE - Provided are a supported catalyst, an electrode including the same, and a fuel cell using the electrode. The supported catalyst includes a carbon-based catalyst support and metal catalyst particles having an average diameter of 3.5 to 5 nm and an amount of 80 to 90 parts by weight based on 100 parts by weight of the supported catalyst in a multi-layer structure adsorbed on a surface of the carbon-based catalyst support. In the supported catalyst of the present invention, as small metal catalyst particles with an average diameter of 3.5 to 5 nm are dispersed with high concentration, high dispersion, and the multi-layer structure, catalytic efficiency is increased. A fuel cell having improved energy density and fuel efficiency characteristics can be prepared using an electrode formed using the supported catalyst. | 12-31-2009 |
| 20090197764 | CATALYST FOR PURIFYING EXHAUST GAS - In the present invention, it is an assignment to optimize a loading density of noble metal on catalyst. | 08-06-2009 |
| 20090247403 | HONEYCOMB STRUCTURE - A honeycomb structure includes at least one a honeycomb unit having a longitudinal direction. | 10-01-2009 |
| 20100261603 | METHOD FOR THE PRODUCTION OF A SHELL CATALYST LOADED WITH PD AND/OR AU - The present invention relates to a process for the production of a shell catalyst which comprises a catalyst support shaped body with an outer shell in which metallic Pd and/or Au is contained. In order to provide a process by means of which shell catalysts can be obtained, in the outer shell of which relatively high metallic Pd and/or Au contents are contained, a process is proposed comprising the steps of
| 10-14-2010 |
| 20090075815 | Fine Tetrahedral Palladium Particle and Process for Producing Fine Metallic Particle - An object of the present invention is to provide tetrahedral fine palladium particles having a high degree of shape selectivity, and a process for producing fine metal particles. | 03-19-2009 |
| 20090325795 | METHOD FOR PRODUCING PLATINUM NANOPARTICLES - A producing method includes a preparing step of preparing a chemical compound having at least one of elements of alkali metals and alkali earth metals along with platinum, and a reducing step of reducing the prepared chemical compound with a reducing agent to form platinum nanoparticles. | 12-31-2009 |
| 20090318286 | EXHAUST GAS PURIFYING CATALYST - The present invention provides an exhaust gas purifying catalyst that can keep high catalytic performance even being subjected to exhaust gas. The exhaust gas purifying catalyst includes: noble metal particles ( | 12-24-2009 |
| 20090181847 | EXHAUST GAS-PURIFYING CATALYST - Decreasing HC emission is made possible. An exhaust gas-purifying catalyst includes a substrate, a hydrocarbon-adsorbing layer covering the substrate, and a catalytic layer covering the hydrocarbcn-adsorbing layer. The catalytic layer includes a layered structure of a first catalytic layer including a precious metal and a carrier supporting it, and a second catalytic layer including the same precious metal as the precious metal of the first catalytic layer and a carrier supporting it and having a concentration of the precious metal higher than that in the first catalytic layer. | 07-16-2009 |
| 20090069175 | Nanostructured anode PT-RU electrocatalysts for direct methanol fuel cells - An aerosol-assisted method for synthesis of nanostructured metallic electrocatalysts and the electrocatalysts formed thereby. The electrocatalyst may be formed from metals such as, but not limited to, platinum, platinum group metals, and binary and tertiary compositions thereof such as, for example, platinum-ruthenium and platinum-tin. The resulting unsupported electrocatalyst is homogenous and highly disperse. | 03-12-2009 |
| 20090239745 | CATALYST FOR PURIFYING EXHAUST GAS - To improve a CO conversion in stoichiometry-lean atmosphere, and additionally to prevent the rise of pressure loss. | 09-24-2009 |
| 20110039692 | Nanocomposite Support Materials - The present teachings are directed toward hexagonally patterned porous titania synthesized from a titanium isopropoxide precursor using a viscous template of surface-active agents separating nanoscopic bicontinuous channels of water and isooctane. Subsequent catalyst metal salt reduction in the aqueous nanochannels deposits well-separated catalyst metal nanoparticles on the pore surfaces. These nanocomposites exhibit significantly higher carbon monoxide oxidation efficiency than that obtained with known supports with higher specific surface area; efficiency is believed to be due to decreased mass transfer resistance provided the presently disclosed support material. | 02-17-2011 |
| 20090312180 | METHODS OF MAKING PLATINUM AND PLATINUM ALLOY CATALYSTS WITH NANONETWORK STRUCTURES - This invention relates to the preparations of noble metal catalysts, i.e., platinum and platinum alloys, on suitable supports with nanonetwork structures and high catalytic efficiencies. A compact structure of a monolayer or a few layers is formed by self-assembly of organic polymer, e.g., polystyrene (PS), nanospheres or inorganic, i.e., silicon dioxide (SiO | 12-17-2009 |
| 20090312181 | MESOPOROUS ELECTRICALLY CONDUCTIVE METAL OXIDE CATALYST SUPPORTS - A catalyst support material comprising TiO | 12-17-2009 |
| 20110251055 | Supported Precious Metal Catalysts Via Hydrothermal Deposition - A process for making a catalyst having precious metal nanoparticles deposited on a support includes first providing an aqueous dispersion of support particles. A pre-treatment slurry is prepared by mixing the aqueous dispersion of support particles with a water-soluble precious metal precursor and a reducing agent. The pre-treatment slurry is hydrothermally treated at a temperature in the range of from about 40° C. to about 220° C. for a time sufficient to deposit precious metal nanoparticles on the surface of the support particles, the precious metal nanoparticles having an average particle size less about 50 nm. | 10-13-2011 |
| 20120122675 | NOBLE METAL COLLOIDAL PARTICLES, NOBLE METAL COLLOIDAL SOLUTION, AND CATALYST FOR HYDROGEN PEROXIDE DECOMPOSITION - The noble metal colloidal particles of the present invention are noble metal colloidal particles each including: a Pd colloidal particle; and Pt supported on the surface of the Pd colloidal particle. The noble metal colloidal particles are substantially free from a protective colloid. The Pd colloidal particles have an average particle diameter of 7 to 20 nm. The amount of the Pt supported on the surface of the Pd colloidal particle is 0.5 to 2 atomic layers thick, when the amount is expressed as the number of atomic layers of the Pt. The noble metal colloidal solution of the present invention can be obtained by dispersing these noble metal colloidal particles of the present invention in a solvent. | 05-17-2012 |
| 20080214390 | Catalyst For Purifying Exhaust Gas - The formation of H | 09-04-2008 |
| 20120202683 | Layered Catalyst - In one embodiment, a layered catalyst including a surface axis includes a catalyst material layer, and a substrate material layer contacting the catalyst material layer, the catalyst material layer including a compressed atomic distance between two adjacent catalyst atoms along the surface axis relative to an atomic distance of the same catalyst material as in bulk, and the substrate material having a higher surface energy than the catalyst material. In certain instances, at least 70 percent of total atoms of the catalyst material are in a film growth mode. In certain other instances, a surface free energy of the substrate material is 1 to 50 percent greater than a surface free energy of the catalyst material. In yet certain other instances, the catalyst material layer has a d-band center in a range of −2.1 eV to −2.25 eV. | 08-09-2012 |
| 20100323884 | THERMALLY STABLE NANOPARTICLES ON SUPPORTS - An inverse micelle-based method for forming nanoparticles on supports includes dissolving a polymeric material in a solvent to provide a micelle solution. A nanoparticle source is dissolved in the micelle solution. A plurality of micelles having a nanoparticle in their core and an outer polymeric coating layer are formed in the micelle solution. The micelles are applied to a support. The polymeric coating layer is then removed from the micelles to expose the nanoparticles. A supported catalyst includes a nanocrystalline powder, thin film, or single crystal support. Metal nanoparticles having a median size from 0.5 nm to 25 nm, a size distribution having a standard deviation ≦0.1 of their median size are on or embedded in the support. The plurality of metal nanoparticles are dispersed and in a periodic arrangement. The metal nanoparticles maintain their periodic arrangement and size distribution following heat treatments of at least 1,000° C. | 12-23-2010 |
| 20120040824 | EXHAUST GAS-PURIFYING CATALYST - An exhaust gas-purifying catalyst includes a support provided with one or more through-holes through which exhaust gas flows, and a catalytic layer supported by the support and containing an oxygen storage material. The exhaust gas-purifying catalyst includes a first section to which the exhaust gas is supplied, and a second section to which the exhaust gas having passed through the first section is supplied. The catalytic layer includes a layered structure of a first catalytic layer containing platinum and/or palladium and a second catalytic layer containing rhodium in the first catalytic section and further includes a third layer containing rhodium in the second section. The second section is smaller in oxygen storage material content per unit volumetric capacity than the first section. | 02-16-2012 |
| 20100093528 | HONEYCOMB STRUCTURE - There is disclosed a honeycomb structure having a plurality of segments and each including a plurality of cells, wherein each segment has a porous base material having the honeycomb shape, and a modified portion formed by impregnating a part of the base material with a slurry including particles smaller than the average pore diameter of the base material, followed by a heat treatment, the base material has a porosity of 30 to 80% and an average pore diameter of 5 to 40 μm, and the modified portion is partially formed on the section of the segment vertical to the axial direction of the cells, and has a porosity which is 2 to 20% lower than that of the base material and an average pore diameter which is 0.1 to 10 μm smaller than that of the base material. | 04-15-2010 |
| 20120316061 | FUEL CELL ELECTROCATALYST - This invention provides a highly stable electrocatalyst having excellent electrochemical properties, which comprises a support containing a composite oxide containing Sb-doped SnO | 12-13-2012 |
| 20120135862 | METHODS OF PREPARING ELECTROCATALYSTS FOR FUEL CELLS IN CORE-SHELL STRUCTURE AND ELECTROCATALYSTS - Provided are a method of preparing an electrocatalyst for fuel cells in a core-shell structure, an electrocatalyst for fuel cells having a core-shell structure, and a fuel cell including the electrocatalyst for fuel cells. The method may be useful in forming a core and a shell layer without performing a subsequent process such as chemical treatment or heat treatment and forming a core support in which core particles having a nanosize diameter are homogeneously supported, followed by selectively forming shell layers on surfaces of the core particles in the support. Also, the electrocatalyst for fuel cells has a high catalyst-supporting amount and excellent catalyst activity and electrochemical property. | 05-31-2012 |
| 20100190642 | Catalyst for Decomposition of Nitrogen Oxides - This invention relates generally to a platinized tin oxide-based catalyst. It relates particularly to an improved platinized tin oxide-based catalyst able to decompose nitric oxide to nitrogen and oxygen without the necessity of a reducing gas. | 07-29-2010 |
| 20100062930 | EXHAUST GAS PURIFICATION CATALYST - The invention provides an exhaust gas purification catalyst comprising one or more catalyst coating layers having platinum and/or palladium with rhodium supported on a carrier, characterized in that the (platinum and/or palladium)/rhodium weight ratio is 1.0 or less. | 03-11-2010 |
| 20090099015 | PRODUCTION METHOD OF CATALYST LAYER - Provided is a production method of a catalyst layer which is improved in catalyst activity and catalyst utilization efficiency. The method of producing a catalyst layer includes the steps of forming a first layer including a catalyst precursor on a substrate by a vapor phase process; forming cracks in the first layer; and reducing the first layer having the cracks formed therein. | 04-16-2009 |
| 20120178619 | Photocatalyst, Method Of Preparing The Same, Decomposer For Organic Compound Using Photocatalyst, And Device For Organic Waste Disposal Using Photocatalyst - A photocatalyst according to example embodiments may include a porous metal oxide and an oxygen vacancy-inducing metal. A portion of the oxygen vacancy-inducing metal may be included in a lattice of the porous metal oxide, while another portion may be exposed at the surface of the porous metal oxide. The porous metal oxide may be a divalent or multivalent metal oxide. The oxidation number of the oxygen vacancy-inducing metal may be smaller than the oxidation number of the metal of the porous metal oxide. | 07-12-2012 |
| 20120289400 | METHOD FOR STABILIZING SIZE OF PLATINUM HYDROXIDE POLYMER | 11-15-2012 |
